I'm trying to add a button and a new menu command to the Outlook window
when composing a new email for the standard HTML message and the Word
message.  From what I've read I need to use the Outlook Object Model.
So here is my confusion.

1.  If I use the object model does that mean I still use IExchExt,
IExchExtCommands, et. al.?  If not, how do I register my functions to
get called back?

2.  On MSDN when looking up IExchExt, it is under the topic of Exchange
Server 5.5.  Are these API's old and now the Outlook Object Model has
effectively replaced IExchExt?

3.  Know of any good reference materials?

I'm using C++ and plan on developing for Outlook 2000.  

Thanks,

Byron